Screen bombshell Hedy Lamarr co-invented – with composer George Antheil – an early technique for spread spectrum communications and frequency hopping, necessary to wireless communication from the pre-computer age to the present day. from http://en.wikipedia.org/wiki/Hedy_Lamarr

A movie-makin' hottie with legs, looks, and "the intention to make radio-guided torpedoes harder for enemies to detect or jam". Find me one of those man-killers in Hollywood today!